Existence and uniqueness for $L^1$ data of some elliptic equations with natural growth
Existence and uniqueness for $L^1$ data of some elliptic equations with natural growth
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发表时间:
2003
影响因子:
1.4
通讯作者:
S. S. D. León-S.
中科院分区:
文献类型:
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作者:
S. S. D. León-S.
We deal with the following nonlinear elliptic problem: { −div a(x, u,∇u) + b(x, u,∇u) = f in Ω u = 0 on ∂Ω; where Ω is a bounded open in IR , f ∈ L(Ω), −div a(x, u,∇u) defines an operator satisfying Leray-Lions type conditions, and the lower order term satisfies natural growth conditions and some other properties; we point out that these properties do not include a sign assumption (see in (2) below our model example). We prove existence of an entropy solution for this problem (see definition 2.2 below) and we show that, under a natural monotonicity hypothesis, there exists a smallest entropy solution.